In order to further improve Xinsan Mine disaster prevention ability, hidden hazard -formative factors and controlling measures, through the analysis of Xinsan Mine goaf, wasted goaf ( shaft ), closed bad drilling, fault, fracture and fold, collapse column, gas, water transmitting fissure zone, underground water containing, fire area underground and other bad geologic body, hidden hazard factors of Xinsan Mine was settled as goaf water, bad drilling hole, gas, fault. Corresponding measures were made to point healthy and safe development for Sanhe Mine.